INDEX 



Acanthoplia Wallr. 14 

 Acanthoxanthiura DC. 14 

 A canthoxanthium 



spinosum Fourr. 14 

 Anoplia Wallr. 15 

 Campy lorrhyncha Wallr. 15 

 Euxanthium DC. 15 

 Lappa canadensis 



minor i Ray 26 

 Orthorrhyncha Wallr. 15 

 Xanthium L. 12 



abyssinicum Wallr. 16 



acerosum Greene 9, 43 



acutilobum M. & S. 35 



acutum Greene 31, 9, 33, 34, 35 



affine Greene 31, 9, 33, 35 



ambrosioides H. & A. 17 



americanum Walt. 20, 10, 22, 23 



antiquorum Wallr. 16, 17, 20 



arcuatum M. & S. 25 



australe M. & S. 37 



brasilicum Velloz. 37 



brevirostre Wallr. 16, 17 



bubalocarpon Bush 47, 48 



californicum Greene 31, 9, 33, 34, 35, 

 36 



calvum M. & S. 35 



campestre Greene 49, 39 



canadense Mill. 20, 17, 46 



carolinense Dill. 17 



Cavanillesii Schouw. 40 



cenchroides M. & S. 30 



chinense Mill. 17, 10, 23, 25, 26, 27, 

 32, 37, 39, 40 



commune Britt. 40, 29, 41, 43 

 Woptoni Cockll. 28 



crassifolium M. & S. 35 



crassum Raf. 16 



cuneatum Moen. 26 



curyescens M. & S. 25 



cylindricum M. & S. 23, 9 



discolor Wallr. 16, 17, 21 



echinatum Murr. 38, 10, 22, 23, 33, 

 42,43 



Xanthium 



elatius a majus americanum Moris. 26 

 eriocarpon Wallr. 17 

 glabratum Britt. 17 

 glanduliferum Greene 40, 9, 43 

 globosum Shull 23, 9, 10 

 homothalamum Spr. 37 

 inaequilaterum DC. 17 

 inflexum Mack. & Bush 30 

 italicum Mor. 40, 10, 27, 33, 34, 38, 43 

 laevigatum Muhl. 45 

 leptocarpum M. & S. 28, 26, 27 

 leucocarpon Wallr. 17 

 longirostre Wallr. 17, 22, 37 

 Macounii Britt. 40, 43 

 macrocarpum DC. 26, 10, 27 



glabratum DC. 17 

 maculatum Raf. 38, 16, 39 

 majus canadense Herm. 26 

 occidentale Bertol. 17. 22. 23 

 oligacanthum Piper 28 

 orientale L. 26, 10, 16, 20, 25, 27, 39 

 oviforme Wallr. 44, 47, 48, 49 

 palustre Greene 36 

 pennsylvanicum Wallr. 31, 10, 22, 



25, 36, 39, 4i, 44, 45 



eglandulosum Wallr. 31, 34, 32 



glandulosum Wallr. 31, 34 

 pensylvanicum Wallr. 31 

 priscorum Wallr. 17, 1 6 

 pungens Wallr. 17, 22, 23, 45 

 riparium Lasch. 39 

 Roxburghii Wallr. 16, 17 

 saccharatum Wallr. 31, 34 

 silphiifolium Greene 44, 45, 46, 47 

 speciosum Kearn. 47, 27, 44 

 spinosum L. 14, 10 

 strumarium L. 16, 10, 17, 22 



antiquorum Ball. 16 



brasilicum Bak. 37 

 undulatum Raf. 16 

 varians Greene 40, 43 

 Wootoni Cockll. 28 

 xanthocarpon Wallr. 14, 15, 45 



